To all whom it may concern



t faire gauntffitr.

ANTHONY M sMITH, OF BROOKLYN, New YORK.

l Letters Patent No. 61,025., dated January 8, 1867.

IMPROVEMENT 1N SPRLNG Locus.

fiilgve'rlghnle referat tu im tlges tettat -timnt :mh mating gm uf .its ma.l

TO ALL WHOM IT MAY CONCERN: i

Be it known lthat I, ANTHONY M. SMITH, of the city of Brooklyn, in `the 'county of Kings, and State of New-York, have invented certain new and use-ful improvements in Night-Latches or Locks; and I hereby declare the following to be a full, clear, and exact description thereof, reference being had to the accompanying drawings, which are lettered to correspond with and to form a part of the specification.

Inorder that the public may fully understand the natureof my invention, and those skilled in the mechanic:l arts be enabled to construct and operate the same, I will describe it as follows, to wit :v

Figure 1 is a perspective drawing of the interiorl oi" the lock or nightrlatch.

Figure 2 is a transverse vertical section through the extension chamber or recess.

Figure 3 is a perspective view ofthe tube provided with a nut, which lforms a part thereof, toreceive the set-screw at the back end of the tube. 4 y

This drawing also shows the extended arm, whichV is secured to and forms a part of the Ainner or spring chamber of the tube.

The'novelty and advantages of my improvements are, adjusting the tube or barrel A by -means of a; set' v screw,.u, and nutor boss, b, forming a part of the tulie A, operating in a recess, o, vat the back of the lock to suit the different thicknesses of doors or trunks; and, by means of an elongated transverse catch, ,'which constitutes a part of the bolt B, and the extended arm e that forms a part of the spring chamber or inner tube which is operated by the night-key, I am enabled to operate th'e bolt B at any position of the adjustable barrel or tube A. I also believe the arrangement of the eccentric button or stop, n, to be new and'useful as applied to doors or trunks. l y

Therefore, what I claim as novel and useful, and what I wish to secure by LettersPatent of the United States of North America, is y The combination of the extension tube A and nuts, the elongated catch al and arme, operating in recess o by means of the setscrew u, substantially asdescribed and shown in the accompanying drawings.

In testimony whereof I hereunto subscribe my name lin the presence of two-- A. M. SMITH. Witnesses:

JAMES P. McLEAN,

A. N. Bonenns.' 

